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WAEC WASSCE Mathematics 2012 past questions and answers

This 2012 WAEC WASSCE Mathematics set has 40 practice questions. Try these 5 free sample questions, tap a question to reveal the answer and explanation. Then practise the whole 2012 set with instant marking.

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Sample WAEC WASSCE Mathematics 2012 questions

1. A bag contains 3 red balls and 2 blue balls. If one ball is chosen at random, what is the probability that it is blue?
  1. 2/5
  2. 3/5
  3. 1/2
  4. 2/3

Answer: A. 2/5

There are 2 blue balls among 5 balls, so the probability is 2/5.

2. Find the mean of 4, 6, 8 and 10.
  1. 6
  2. 7
  3. 8
  4. 28

Answer: B. 7

The sum is 28 and 28 divided by 4 is 7.

3. What is the gradient of the line joining the points (2, 1) and (6, 9)?
  1. 1/2
  2. 1
  3. 2
  4. 4

Answer: C. 2

The gradient is (9 - 1)/(6 - 2) = 8/4 = 2.

4. If P has position vector (2, -1) and Q has position vector (-3, 4), what is vector PQ?
  1. (5, -5)
  2. (-1, 3)
  3. (1, -3)
  4. (-5, 5)

Answer: D. (-5, 5)

Vector PQ is Q - P, which is (-3 - 2, 4 - (-1)) = (-5, 5).

5. What is the image of the point (3, -2) under reflection in the x-axis?
  1. (3, 2)
  2. (-3, -2)
  3. (-3, 2)
  4. (2, 3)

Answer: A. (3, 2)

Reflection in the x-axis changes the sign of the y-coordinate only.

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